Larvicidal Potential of Five Selected Dragonfly Nymphs in Sri Lanka over Aedes aegypti (Linnaeus) Larvae under Laboratory Settings

Table 2

Mean number of Aedes aegypti larvae consumed by Anax indicus (the best performer, in terms of larval predation) with different body size categories.

Body size/Maturity categories	Mean Number of Aedes aegypti larvae consumed by Anax indicus
	Total number of larvae consumed within 24 hours	Average number of larvae consumed within 1 hour
Large/Initial; (35-45 mm)	214.00 ± 13.20; (200.80 – 227.20)	8.92 ± 0.55; (8.37 – 9.47)
Medium/Medium; (25-35 mm)	110.00 ± 7.14; (102.86 – 117.14)	4.58 ± 0.30; (4.28 – 4.88)
Small/Matured; (10-20 mm)	52.87 ± 5.34; (47.53 – 58.21)	2.20 ± 0.22; (1.98 – 2.42)

Note: values are Mean ± SE, range in parenthesis. Different superscript letters in a column show significant differences (p< 0.05) as suggested by General Linear Modelling followed by the Tukey’s pair wise comparison at 95% level of significance.